UphillSport Extra Cushioned Sports Socks are merino wool rich, designed and manufactured in Finland, using wool serviced from mulesing-free sources. (mulesing is the controversial anti-flystrike sheep farming practice where strips of skin are removed without anaesthetic) and all yarn is traceable and sustainable. The socks have a fitted, Y-shaped heel, and flat, hand linked toes for smooth seams that prevent abrasion and blistering during movement.